\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Linear time trend and unemployment rate regression results}
\begin{tabular}{l*{8}{c}}
\toprule
            &\multicolumn{2}{c}{US (GSS)}               &\multicolumn{2}{c}{US (HRS)}               &\multicolumn{2}{c}{UK}                     &\multicolumn{2}{c}{Germany}                \\
            & No controls         &    Controls         & No controls         &    Controls         & No controls         &    Controls         & No controls         &    Controls         \\
            &                     &                     &                     &                     &                     &                     &                     &                     \\
\midrule
Unemployment rate*100&        1.39\sym{***}&         1.4\sym{***}&        .868\sym{***}&        .898\sym{***}&        .688\sym{***}&        .628\sym{***}&        1.99\sym{***}&        1.87\sym{***}\\
            &      (.175)         &      (.177)         &     (.0443)         &     (.0539)         &      (.133)         &      (.138)         &       (.15)         &      (.161)         \\
Linear time trend*10&         .38         &        .313         &         .84\sym{*}  &        .964\sym{*}  &       -1.23\sym{***}&       -1.18\sym{**} &        1.42\sym{***}&        1.08\sym{*}  \\
            &      (.337)         &      (.357)         &      (.282)         &      (.316)         &      (.319)         &      (.348)         &      (.377)         &      (.413)         \\
\midrule
\(N\)       &          22         &          22         &          12         &          12         &          27         &          27         &          34         &          34         \\
\(R^{2}\)   &       0.607         &       0.602         &       0.883         &       0.883         &       0.823         &       0.777         &       0.791         &       0.733         \\
Baseline year insecurity&        13.9         &        13.9         &        15.4         &        15.4         &         9.6         &         9.6         &        11.1         &        11.1         \\
\tabnotes{9}{This table displays the results of regressions of the average marginal effects of the year dummies (with and without controls) on the unemployment rate and a linear time trend using the GSS, HRS, BHPS/UKHLS, and SOEP data. Standard errors in parentheses. *p < 0.05, **p < 0.01 ***p < 0.001}
